公开(公告)号：US20140356199A1

公开(公告)日：2014-12-04

申请号：US14288466

申请日：2014-05-28

Applicant: ABB Technology AG

Inventor： Jukka VARIS ,  Tommi Lempiäinen

IPC: F04D25/06 ,  B63H5/125 ,  B63H23/24

CPC classification number: F04D25/06 ,  B63H5/125 ,  B63H23/00 ,  B63H23/24 ,  B63H2005/1258 ,  B63H2023/005 ,  Y02T70/5236

Abstract: A propulsion unit is disclosed, which can include a casing, a shaft, a propeller, an annular housing and a rim drive electric motor. The casing can be rotatably supported at a hull of a vessel. The shaft can be rotatably supported with bearings within a lower portion of the casing. A propeller can be attached to an outer end of the shaft protruding from the lower portion of the casing. The annular housing can surround an outer perimeter of the propeller and can form a duct for water flowing through the interior of the annular housing. The rim drive electric motor can include a rotor rim provided on an outer perimeter of the propeller and a stator provided within the annular housing. Oil lubricated roller bearings can be used on the shaft within the casing. The axial length of the propulsion unit can be short.

Abstract translation: 公开了一种推进单元，其可以包括壳体，轴，螺旋桨，环形壳体和轮辋驱动电动机。 壳体可以可旋转地支撑在船体的船体上。 轴可以在壳体的下部中由轴承可旋转地支撑。 螺旋桨可以附接到从壳体的下部突出的轴的外端。 环形壳体可以围绕螺旋桨的外周边，并且可以形成用于水流过环形壳体的内部的管道。 轮辋驱动电动机可以包括设置在螺旋桨的外周上的转子轮辋和设置在环形壳体内的定子。 油润滑滚子轴承可用于外壳内的轴上。 推进单元的轴向长度可能很短。